WAGO 750 Series Manual page 187

Register address 0x2030 (MODBUS Address 408241, with a word count of upto 65)
Designation
Access
Description
Register address 0x2031 (MODBUS Address 408242, with a word count of upto 64)
Designation
Access
Description
Register address 0x2032 (MODBUS Address 408243, with a word count of upto 64)
Designation
Access
Description
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
Description of the connected I/O modules
Read modules 0 ... 64
Length 1-65 words
These 65 registers identify the controller and the first 64 modules present in a
node. Each module is represented in a word. Because item numbers cannot
be read out of digital modules, a code is displayed for them, as defined
below:
Bit position 0 ->
Bit position 1 ->
Bit position 2-7 ->
Bit position 8-14 ->
Bit position 15 ->
Examples:
4 Channel Digital Input Module = 0x8401
bit 15 14 13 12 11 10 9
code 1 0 0 0 0
hex 8
2 Channel Digital Output Module = 0x8202
bit 15 14 13 12 11 10 9
code 1 0 0 0 0
hex 8
Description of the connected busmodules
read modules 65 ... 128
Length 1-64 words
These 64 registers identify the 2nd block of I/O modules present (modules
65 to 128). Each module is represented in a word. Because item numbers
cannot be read out of digital modules, a code is displayed for them, as
defined below:
Bit position 0 ->
Bit position 1 ->
Bit position 2-7 ->
Bit position 8-14 ->
Bit position 15 ->
Description of the connected I/O modules
read modules 129 ... 192
Length 1-64 words
These 64 registers identify the 3rd block of I/O modules present (modules
129 to 192). Each module is represented in a word. Because item numbers
cannot be read out of digital modules, a code is displayed for them, as
defined below:
Bit position 0
Bit position 1
Bit position 2-7
Bit position 8-14 ->
Bit position 15
MODBUS Functions
Internal Variables
Input module
Output module
not used
module size in bits
Designation digital module
8 7 6 5
1 0 0 0 0
4 0
8 7 6 5
0 1 0 0 0
2 0
Input module
Output module
not used
module size in bits
Designation digital module
-> Input module
-> Output module
-> not used
module size in bits
-> Designation digital module
• 183
4 3 2 1 0
0 0 0 0 0 1
1
4 3 2 1 0
0 0 0 0 1 0
2